The antonyms for the word "most floored" are words that denote the opposite meaning of being impressed or stunned. These can include words such as underwhelmed, unimpressed, unmoved, apathetic, indifferent, and blase. These words are used to describe situations where something fails to cause any emotional impact or fails to meet one's expectations. While being floored implies a positive reaction, the use of antonyms suggests a lack of enthusiasm or interest. It is important to note that antonyms are not always absolute and can vary in degree depending on the context of their usage.